KR102330314B1 - Complex polluted soil purification system - Google Patents

Abstract

The present invention relates to a contaminated complex soil purification system, and more specifically, to a contaminated complex soil purification system, which comprises: a pulverizer to which the contaminated soil to be purified is input and which pulverizes and discharges the input contaminated soil; a first wet sorting device to which the contaminated soil discharged from the pulverizer is input and which separates and discharges soil having a size of less than a first particle diameter from the contaminated soil while washing the supplied contaminated soil by spraying washing water; a first cyclone into which the soil of the first particle diameter or less separated and discharged from the first wet sorting device is introduced, and which separates and discharges the fine soil smaller than or equal to a second particle diameter relatively smaller than the first particle diameter; a sedimentation tank in which the fine soil separated and discharged from the first cyclone is introduced, and which makes the fine soil sedimented to a bottom by gravity and discharges the unsedimented suspended soil; a coagulation sedimentation tank into which the suspended soil discharged from the sedimentation tank is introduced and a coagulant is input to cause the sediment to be aggregated from the suspended soil and sedimented to the bottom; a thickening tank which is connected to discharge ends of the sedimentation tank so that the sediments treated respectively in the sedimentation tank and the coagulation sedimentation tank are introduced thereto, and which generates separated concentrated sludge through gravity by storing and discharges the generated concentrated sludge; and a filter press to which the concentrated sludge discharged from the thickening tank is introduced, and which dehydrates the concentrated sludge to produce and discharge a dewatered cake. The present invention controls the excessive use of the oxidizing agent while linking and disposing a plurality of screening means prior to the precipitation process and is capable of further improving purification efficiency by refining the polluted soil to be purified through sequential particle size separation.

Description

Complex polluted soil purification system

The present invention is a complex pollution that further improves the purification efficiency by arranging the first wet sorting device, the first cyclone, the second wet sorting device and the second cyclone, and refining the contaminated soil to be purified through sequential particle size separation thereof. It relates to a soil purification system.

Recently, the seriousness of soil and groundwater contamination due to wastes and hazardous chemicals generated due to population growth and industrial development around the world has increased, and the importance of the soil environment affected by development projects is emerging.

Heavy metals in the soil are not decomposed and are adsorbed, solidified, or re-eluted according to changes in the physical and chemical environment, causing contamination to spread.

If the amount of metal accumulated in the soil increases, it can act as a risk factor that interferes with the enzyme activity of plants or microorganisms. When metal contaminants are introduced through groundwater, they adversely affect various organisms that use groundwater, and when absorbed into plant tissues, ultimately harm humans through the food chain.

Contamination forms due to heavy metals can be divided into exchange forms, carbonate forms, forms adsorbed to iron oxide or manganese oxide, forms bound to organic matter or sulfur, and residual forms.

As methods for purifying contaminated soil, there are soil washing and electrokinetic extraction methods. These technologies are difficult to remove heavy metals in organic or sulfur-bound and persistent forms. However, the use of strong acid has a problem of causing secondary pollution such as corrosion of washing equipment, wastewater treatment problems, and soil acidification.

In addition, when the metal component is very strongly bound to the soil particles only by the conventional soil washing technique, when the density and surface characteristics of the soil containing the metal component and the soil without the metal component are not clearly distinguished, the washing is caused by the various chemical properties of heavy metals When the technology is difficult to apply, when heavy metals are combined with soil particles of various sizes, when the silt/clay content exceeds 30-50%, or in the case of a soil with a high humic content, organic matter with high viscosity is added to the soil There was a problem in that it was difficult to effectively remove the contaminants adsorbed to the soil, such as when it is contained.

In particular, the conventional soil washing technology has a characteristic that the purification efficiency is low when the applied soil contains a large amount of fine soil, which is due to the characteristics of fine soil having a high specific surface area and a large amount of adsorption sites. Since organic and inorganic pollutants are more strongly adsorbed compared to other cases, it is difficult to desorb through the purification method, so the installation cost is high in terms of economy, eco-friendliness, workability, and safety of the purification system, and lots of site installation sites for the purification system are secured. There is a problem that must be addressed.

Korean Patent Registration No. 10-847058

Therefore, the present invention has been devised to solve the above problems, and while controlling the excessive use of the oxidizing agent, a plurality of screening means are linked and arranged prior to the precipitation treatment process, and the contaminated soil to be purified is refined through sequential particle size separation thereof. An object of the present invention is to provide a complex contaminated soil purification system that can further improve purification efficiency by doing so.

As a means for solving the above-mentioned problems, the contaminated soil purification system of the present invention (hereinafter referred to as "the system of the present invention") includes: a pulverizer to which contaminated soil to be purified is input, pulverizing and discharging the input contaminated soil; a first wet sorting device for separating and discharging contaminated soil discharged from the pulverizer by separating and discharging soil having a size of less than a first particle diameter from the contaminated soil while washing the supplied contaminated soil with washing water injected; a first cyclone for separating and discharging fine soil smaller than or equal to a first particle size, which is separated and discharged from the first wet sorting device, and separated and discharged; a sedimentation tank in which fine soil separated and discharged from the first cyclone is introduced, the fine soil is gravity sedimented to the bottom, and the unsettled floating soil is discharged; a coagulation sedimentation tank in which the suspended soil discharged from the sedimentation tank is introduced, and a coagulant is input to cause the sediment to be aggregated from the floating soil and sediment to the bottom; a thickening tank connected to the discharge ends of the sedimentation tank and the coagulation and settling tank, the sediments treated respectively in the sedimentation tank and the coagulation and settling tank are introduced, and the sediment is stored to generate gravity-separated concentrated sludge and discharge the generated concentrated sludge; and a filter press in which the concentrated sludge discharged from the thickening tank is introduced, and the concentrated sludge is dehydrated to produce and discharge a dewatering cake.

As an example, the pulverizer includes a body having an input space formed therein and an opening provided at a lower portion, a rotating shaft installed to pass through the input space of the body in the transverse direction to rotate, and a longitudinal direction of the rotating shaft. A fastening flange coupled at regular intervals and a plurality of grinding blades radially coupled along the circumference of the fastening flange in a direction orthogonal to the rotation shaft, each grinding blade coupled to one fastening flange and adjacent to the other fastening flange Each of the combined grinding blades is characterized in that they are cross-arranged so as not to face each other.

As an example, fine soil below the second particle size provided at the rear end of the first cyclone and separated and discharged from the first cyclone is introduced, and washing water is sprayed to wash the introduced fine soil below the second particle size. a second wet sorting device for separating and discharging fine soil smaller than or equal to a third particle diameter, which is relatively smaller than the second particle diameter; and a fourth particle diameter that is provided between the rear end of the second wet sorting device and the front end of the sedimentation tank and has a third particle diameter or less, which is separated and discharged from the second wet sorting device, and is relatively smaller than the third particle diameter. It is characterized by further comprising a; a second cyclone that sorts and discharges fine soil smaller than the size and introduces it into the sedimentation tank.

As an example, the coagulation sedimentation tank includes an inlet line through which the suspended soil discharged from the sedimentation tank is introduced, the treated water including the introduced suspended soil is accommodated therein to maintain a certain water level, and the flocculating agent from the outside a treatment tank in which a sediment discharge line is formed at one end and the treated water discharge line communicating with the overflow chamber is formed on the other side of the inputted sediment discharge line through which the aggregated and precipitated sediment is discharged from the floating soil; A pair of chains that move in parallel with each other along the bottom surface of the treatment tank and then move in an ascending manner, a plurality of sprockets for driving the chain, and both ends are fixed to the pair of chains for the treatment A flow part including a plurality of guide plates for allowing the sediment to flow in one direction on the bottom surface of the tank and for allowing the float to flow in one direction in a portion where the water level is formed; and a floating matter collection pipe that is rotatably fastened inside the treatment tank and has a floating material inlet hole formed at the upper end thereof, and has one end communicating with the outside of the treatment tank to discharge the floating material introduced into the treatment tank to the outside.

As an example, the treatment tank is characterized in that the anti-sag portion for supporting the chain from the lower portion is configured.

As an example, the guide plate is characterized in that it includes a transmission plate fixed to the chain and forming a hole, and a non-permeable plate fixed to an end of the transmission plate and made of an elastic material.

As an example, between the guide plate, it is characterized in that it includes a bar fixed to the chain and a floe forming sphere including a plurality of nuclear protrusions protruding from the upper portion of the bar to form a vortex or to flocculate a floating object.

As an example, the floating material collecting pipe is rotatably fastened inside the treatment tank, a floating material inlet hole is formed at the upper end, and one end communicates with the outside of the treatment tank to discharge the floating material introduced into the inside to the outside; , A float guide plate that is hinged to one end of the float inlet hole and is hingedly interlocked and is composed of a mesh network, and a float that protrudes from the other end of the float inlet hole to the outside and falls when struck by hinge interlocking of the float guide plate. It is characterized in that it includes an induction border for guiding the inside of the tube body.

As described above, in the system of the present invention, a plurality of sorting means such as a first wet sorting device, a first cyclone, a second wet sorting device and a second cyclone are connected and arranged prior to the precipitation treatment process, and their sequential particle size separation is performed. It has the effect of resolving environmental problems by controlling the excessive use of the oxidizing agent while further improving the purification efficiency by refining the contaminated soil to be purified through the

In addition, in the system of the present invention, in carrying out the coagulation sedimentation by the coagulation sedimentation tank, it is possible to treat the suspended matter together with the treatment of the aggregated sediment through one device, as well as the treatment efficiency of the suspended matter is high, It has the effect of controlling the load.

1 is a block diagram illustrating a system of the present invention;
Figure 2 is a perspective view showing a grinder according to an embodiment of the present invention.
3 is a side cross-sectional view schematically showing a coagulation sedimentation tank according to an embodiment of the present invention.
4 is a perspective view illustrating a flow part of a coagulation sedimentation tank according to an embodiment of the present invention.
5 is a view showing a guide plate of a coagulation sedimentation tank according to an embodiment of the present invention.
6 is a view showing a floating matter collection pipe of the coagulation sedimentation tank according to an embodiment of the present invention.
7A and 7B are operational state diagrams of the example shown in FIG. 6;
8 is a side view showing the operating state of the flow part of the coagulation sedimentation tank according to an embodiment of the present invention.

Hereinafter, the configuration and operation of the present invention will be described in more detail based on the accompanying drawings. In describing the present invention, the terms or words used in the present specification and claims are based on the principle that the inventor can appropriately define the concept of the term in order to best describe his invention. It must be interpreted as a meaning and concept consistent with the technical idea of

Referring to Figure 1, the system of the present invention includes a pulverizer (1) for pulverizing and discharging contaminated soil to be purified, a first wet sorting device (2), a first cyclone (3), a sedimentation tank (6), It includes a coagulation and sedimentation tank (7), a thickening tank (8) and a filter press (9).

The pulverizer 1 receives contaminated soil to be purified from the outside, and pulverizes the contaminated soil to a predetermined size so that the rear-end selection process can be facilitated and discharged.

For example, as shown in FIG. 2 , the grinder 1 includes a body 1-2 having an input space 1-1 formed therein and an opening provided at a lower portion thereof, and the input of the body 1-2 as shown in FIG. 2 . A rotating shaft 1-3 installed to pass through the space 1-1 in the transverse direction, a fastening flange 1-5 coupled at regular intervals along the longitudinal direction of the rotating shaft 1-3, and the rotating shaft ( 1-3) and may be configured to include a plurality of grinding blades 1-4 that are radially coupled along the circumference of the fastening flange 1-5 in a direction perpendicular to the direction.

One end of the rotating shaft 1-3 is bearing-coupled to one side of the body 1-2, the other end penetrates the other side of the body 1-2, and a sprocket is coupled to the end of the body 1-2 to form an external It is possible to rotate in the input space 1-1 by receiving rotational force by being connected through a chain and the like of the rotation motor.

In particular, each grinding blade 1-4 coupled to the one fastening flange 1-5 and each grinding blade 1-4 coupled to the other fastening flange 1-5 adjacent to each other are arranged crosswise so as not to face each other. Since it has a structure in which the contaminated soil input into the input space 1-1 can be pulverized more efficiently.

The first wet sorting device 2 is connected to the rear end of the pulverizer 1, and the contaminated soil pulverized and discharged in the pulverizer 1 is introduced. Although not shown in the drawing, the first wet sorting device 2 is provided with at least one sorting net, and vibration is applied to the sorting net to separate and sort contaminated soil based on the size of a predetermined particle diameter set, as well as pollution. The soil is washed and discharged.

That is, the first wet sorting device 2 is provided with a plurality of injection nozzles therein, and washing water is sprayed at the same time as the inflow of the contaminated soil or with a time difference to wash the supplied contaminated soil, and the first particle size in the contaminated soil or less of the soil is separated and discharged.

In this case, the first particle size may be 2 to 3 mm, and the soil having the first particle size or larger may be separated and discharged as washing soil and subjected to a separate treatment process.

And the washing water sprayed from the first wet sorting device 2 may be supplied from the washing water tank 7-1 to be described below.

The first cyclone 3 introduces soil with a first particle size or less separated and discharged from the first wet sorting device 2, and selects fine soil with a second particle size or less that is relatively smaller than the first particle size. separate discharge.

The first cyclone 3 performs a particle size separation process by specific gravity difference in the introduced soil, and the structure and operation mechanism of the first cyclone 3 can be applied to various known technologies, so a detailed description thereof is omitted.

In the sedimentation tank 6, the fine soil separated and discharged from the first cyclone 3, that is, the fine soil of the second particle size or less, and the washing water used in the first wet sorting device 2, etc. are introduced, and a predetermined time During retention treatment, the fine soil is gravity sedimented to the bottom to separate it from the washing water.

And the sedimentation tank 6 separates and discharges the sedimented fine soil and the non-settled floating soil through the above process. In the case of non-floating soil, that is, extremely fine soil having a relatively smaller specific gravity or particle size, it is supplied to the coagulation sedimentation tank 7 for post-treatment.

In the coagulation and sedimentation tank 7, the suspended soil and supernatant water discharged from the sedimentation tank 6 are introduced together, and the coagulant is introduced from the outside, and the sediment coagulated by the coagulant from the floating soil and sand is treated by residence for a preset time at the bottom. to precipitate as

Here, the coagulant may use an inorganic electrolyte or an organic polymer compound as a material for precipitating solid particles suspended in a liquid to agglomerate with each other, but the present invention is not limited thereto. It is of course possible to

In addition, the coagulation and precipitation tank 7 may receive a certain amount of treated water for sedimentation treatment of the introduced suspended soil, wherein the treated water is supplemented by supernatant water introduced together with the floating soil or a separate external surface. It may be the inflow of water.

The sediment to be treated in the coagulation sedimentation tank 7 may be introduced into the thickening tank 8 connected to the rear end as in the sedimentation tank 6 , and concentrated in the thickening tank 8 and discharged.

The thickening tank 8 is connected to the discharge ends of the sedimentation tank 6 and the coagulation settling tank 7, so that the fine soil and sediment treated in the sedimentation tank 6 and the coagulation settling tank 7, respectively, are introduced and stored therein. to produce a gravity-separated thickened sludge and discharge the produced thickened sludge.

The filter press 9 is connected to the rear end of the thickening tank 8 and the concentrated sludge discharged from the thickening tank 8 is introduced. The filter press 9 compresses the introduced concentrated sludge by applying a pneumatic or hydraulic press method. Through this dewatering treatment, the filter press 9 is produced and discharged as a dewatering cake, and the discharged dewatering cake is transferred to a separate dewatering cake treatment facility. can be

On the other hand, the system of the present invention proposes a configuration that allows the purification efficiency to be doubled by further refining the soil by repeatedly performing particle size separation on the contaminated soil to be purified.

For example, in the system of the present invention, fine soil having a particle size of less than or equal to the second particle size discharged from the first cyclone 3 is separated by particle size provided at the rear end of the first cyclone 3 and at the front end of the sedimentation tank 6 , It may further include a second wet sorting device (4) and a second cyclone (5) for supplying to the sedimentation tank (6).

The second wet sorting device (4) is provided at the rear end of the first cyclone (3), and fine soil having a size smaller than the second particle size separated and discharged from the first cyclone (3) is introduced, and washing water is injected and introduced While washing the fine soil of the second particle size or less, the fine soil smaller than the third particle size is selected and discharged separately.

The second wet sorting device 4 may have the same sorting structure as the above-described first wet sorting device 2, except that, in the particle size of the soil to be sorted, the third particle diameter is smaller than the second particle diameter. The process of sorting the fine soil of

In this case, the third particle size may be 0.7 to 0.8 mm, and soil having a third particle size or larger may be separated and discharged as washing soil and subjected to a separate treatment process. In addition, the washing water sprayed from the second wet sorting device 4 may also be supplied from the washing water tank 7-1 to be described below.

The second cyclone 5 is provided between the rear end of the second wet sorting device 4 and the front end of the sedimentation tank 6, and is less than or equal to a third particle size that is separated and discharged from the second wet sorting device 4 of fine soil is introduced, and fine soil smaller than the fourth particle size, which is relatively smaller than the third particle size, is selected, separated and discharged, and it is introduced into the sedimentation tank (5).

The second cyclone 5 performs a particle size separation process by specific gravity difference in the introduced soil, and the structure and operation mechanism of the second cyclone 4 can be applied to various known technologies. is omitted.

As such, in this embodiment, the first wet sorting device 2, the first cyclone 3, the second wet sorting device 4, and the second cyclone 4 are arranged in conjunction, and purification is performed through their sequential particle size separation. By further refining the target contaminated soil, the removal of heavy metals adsorbed to the soil with a relatively small surface area is also possible without a separate oxidizing agent, which is environmentally friendly and the purification efficiency can be further improved.

On the other hand, the coagulation sedimentation tank 7 according to an embodiment of the present invention has a structure capable of more efficiently removing and processing scum generated in the sedimentation treatment of the accommodated floating soil.

Specifically, in the coagulation sedimentation tank 7 of this embodiment, as shown in FIG. 3 , the inflow line 21 into which the suspended soil discharged from the sedimentation tank 6 is introduced is constituted, and the treated water containing the introduced floating soil and soil is formed. It is accommodated inside and a certain water level is maintained, and a sediment discharge line 22 is formed at one end and an overflow chamber 25 inside, on the other side, a coagulant is input and the sediment (S2) coagulated and precipitated from the floating soil is discharged. A treatment tank 20 in which a treated water discharge line 23 communicating with the treatment tank 20 is formed, and a pair of chains 31 that move in parallel with each other along the bottom surface of the treatment tank 20 and then move in an endless orbit in such a way that they rise ), and a plurality of sprockets 32 for driving the chain 31, and both ends are fixed to the pair of chains 31, so that the sediment S2 is transferred from the bottom surface of the treatment tank 20 in one direction. In the portion where the water level is formed, the flow portion 30 including a plurality of guide plates 33 to flow the floating object S1 in one direction and the processing tank 20 are rotatably fastened inside the treatment tank 20, A floating material inflow hole 411 is formed at the upper end and one end communicates with the outside of the treatment tank 20 and includes a floating material collection pipe 40 for discharging the floating material S1 introduced into the inside to the outside.

Here, the suspended matter (S1) includes all of the normal scum and free-phase oil components, etc. generated during the sedimentation process for the suspended soil included in the treated water.

As shown in FIG. 3 , the treatment tank 20 reacts with the coagulant input while allowing the floating soil and supernatant to be treated to be introduced through the inlet line 21 and stored therein to form a precipitate S2 due to coagulation. It is to make the float (S1) float while at the same time as possible.

The sediment (S2) coagulated and precipitated for a certain period of time is discharged through the sediment discharge line 22. This sediment discharge line 22 is connected to the inlet end of the thickener 8, so that the sediment S2 is removed from the thickener 8 ), and in the case of the floating matter S1, it is collected by the floating matter collection pipe 40 and discharged to the outside to be subjected to a separate subsequent process such as dehydration treatment.

At this time, the water level of the treated water received in advance in the treatment tank 20 may change due to the inflow of floating soil and supernatant, so that the treated water can be maintained up to a preset water level. Allows the replenishment or discharge of treated water to be selectively adjusted.

The overflow chamber 25 is configured at the upper end of the treatment tank 20, and the treated water from which the sediment S2 and the float S1 are filtered overflows into the overflow chamber 25 and is stored, and the treatment stored in the overflow chamber 25 The water is discharged through the treated water discharge line 23 communicating with the overflow chamber 25 .

In addition, the treated water discharged through the treated water discharge line 23 may be introduced into a washing water tank 7-1 provided at the rear end of the coagulation sedimentation tank 7 and stored, and the treated water stored in this way is the first It is supplied to the wet sorting device 2 and the second wet sorting device 4 so that it can be used as washing water.

The flow unit 30 includes a pair of chains 31 performing an up and down endless orbit movement in the treatment tank 20, a plurality of sprockets 32 allowing the chain 31 to be driven, and the Both ends are fixed to the pair of chains 31 so that the sediment (S2) flows in the direction of the sediment discharge line 22 on the bottom surface of the treatment tank 2, and in the part where the water level is formed, the float (S1) is transferred to the float It includes a plurality of guide plates 33 to flow in the direction of the collection tube (4).

Although not shown in the drawings, the chain is subjected to endless orbital motion by the sprocket 32 that is rotated and interlocked by the driving means.

As shown in FIG. 4 , the treatment tank 20 has a sag preventing part 24 supporting the chain 31 from the lower part, and the sagging preventing part 24 is configured in the treatment tub 20 . It is composed of a protruding support rod 241 and a pedestal 242 attached to the support rod 241 and supporting the chain 31 at a lower portion.

In this way, the sag prevention part 24 is configured to control the sag of the guide plate 33. When the guide plate 33 sags, the induction efficiency of the floating object S1 by the guide plate 33 is lowered. There is so that the anti-sag portion 24 is configured.

In addition, in the present invention, by lowering the moisture content in the floating matter (S1) finally collected by the floating matter collecting pipe 40, an embodiment of controlling the load in the downstream process such as dehydrating the floating matter (S1) is proposed.

In this embodiment, the guide plate 33 is fixed to the chain 31 and includes a perforation plate 331 that forms a hole, and a non-permeable plate 332 of an elastic material fixed to the end of the perforation plate 331 . include

The transmission plate 331 is attached to the upper part of the chain 31 in the drawing, and forms a hole so that the floating matter S1 is filtered and only water is transmitted. The hole formed in the transmission plate 331 has a plurality of through-holes, a mesh formed by weaving, and in the material of the pores, the shape of the floating matter S1 such as the pores is filtered and only water passes through, the shape is not limited.

The non-permeable plate 332 is made of an elastic material and is attached to the upper end of the permeable plate 331 in the drawing to guide the floating matter S1 from the water level part, and although there is no bar shown in the drawing, the bottom of the treatment tank 20 It corresponds to the configuration to induce the sediment (S2) while in contact with the surface.

In this way, the non-permeable plate 332 positioned at the water level part by the configuration of the guide plate 33 induces the float S1 in the water level part, but the flocs are formed by agglomeration between the floats S1 and contained in the float S1. The collected water is discharged through the coagulation process and the like to pass through the permeation plate 331 . That is, by discharging the water contained in the floating matter S1 from the induction process, the moisture content of the floating matter S1 finally collected by the floating matter collection pipe 40 is lowered.

In addition, as shown above, by guiding the flow of water to the permeable plate 331 , the aggregation of the suspended matter S1 in the non-permeable plate 332 is facilitated to increase the removal efficiency of the suspended matter S1 .

That is, to facilitate the discharge of water through the permeation plate 331, the water overflows or flows under the guide plate 33 to control the passage of the floating matter S1 by this flow through the guide plate 33 as much as possible. will do

In the case of this embodiment, as shown in the drawings, the guide plate 33 has an inclined gradient to form an acute angle with the chain 31 so that water can easily drain into the transmission plate 331, thereby achieving the above-mentioned function. It makes sense to double it.

In addition, in the present invention, by lowering the moisture content in the floating matter (S1) finally collected by the floating matter collecting pipe 40, another embodiment to control the load in the downstream process such as dehydrating the floating matter (S1) is proposed and have.

In this embodiment, as shown in FIG. 8, between the guide plate 33, the bar 341 fixed to the chain 31 and the bar 341 protrude from the upper portion to form a vortex or flocculate the floating object. It includes a flock forming sphere 34 including a plurality of nuclear protrusions 342 .

As shown in the drawing, the plug forming hole 34 is composed of a bar 341 attached to the upper part of the chain 31 and a plurality of nuclear protrusions 342 protruding from the bar 341 , the nuclear protrusions 342 . ), as shown in the figure, the nuclear protrusion 342 itself functions as a nucleus in the formation of flocs of the floating object S1 or a vortex is formed to induce the formation of flocs of the floating object S1 by the collision of the vortex at the rear end. will do

That is, the floating matter S1 is flocculated by the flocculation hole 34 to increase the removal efficiency of the floating matter S1.

The material of the plug forming hole 34 is not limited thereto, but it is appropriate to use a material having a high efficiency of generating static electricity through friction with water.

In addition, in the present invention, by lowering the moisture content in the floating matter (S1) collected by the floating matter collection pipe 40 itself, another embodiment is proposed to control the load in the downstream process, such as dehydrating the floating matter (S1). .

The floating matter collection pipe 40 of this embodiment is fastened to be rotatable inside the treatment tank 20 as shown in FIG. 6 , a floating material inlet hole 411 is formed at the upper end, and one end of the treatment tank 20 . A tube body 41 that communicates with the outside and discharges the floating material introduced into the inside to the outside, and a floating material guide plate composed of a mesh network by being hinged 43 to one end of the floating material inlet hole 411 to perform hinge interlocking. (42) and an induction border protruding from the other end of the floating material inlet hole 411 to the outside and guiding the floating object falling when struck by hinge interlocking of the floating material guide plate 42 into the tube body 41 ( 44).

The tube body 41 is rotatably fastened inside the treatment tank 20, and the structure in which the tube body 41 is rotatably fastened in the treatment tank 20 can be applied to various known technologies. Therefore, a detailed description thereof will be omitted.

Floating matter inlet hole 411 is formed at the upper end of the tube body 41, and the floating matter S1 introduced into the floating matter inlet hole 411 is not shown in the drawing through the tube body 41, but the treatment tank (20) It is to be discharged to the outside.

The float guide plate 42 is one end of the float inlet hole 411 and is hinged 43 to a portion opposite to the flow direction of the float S1 to enable hinge interlocking.

Hinge interlocking of the float guide plate 42 is not shown in the drawings as shown in FIG. 6 in one direction, but a control jaw is formed or an acute angle with the outer periphery of the tube body 41 due to the curvature of the tube body 41 and to be controlled by the end of the induction border 44 in the other direction as shown in FIG. 7b. In addition, although the hinge interlocking of the float guide plate 42 is not shown in the drawings, manual interlocking by a handle or the like or automatic interlocking by a driving means may be possible. is omitted.

In addition, the float guide plate 42 is composed of a mesh network so that water passes through the float guide plate 42 but the float S1 is filtered.

As shown in FIG. 6 , the float guide plate 42 forms an inclined gradient at the water level when the pipe body 42 rotates, so that the float S1 is guided to the float inlet hole 411 as well as the float S1 ) is deposited, the water contained in the float S1 passes through the float guide plate 42 so that the float S1 with a low moisture content is guided into the tube body 42 .

The induction rim 44 protrudes from the other end of the floating material inlet hole 411 to the outside, and as shown in the figure, an inclination gradient is formed when the tube body 41 is rotated. As can be seen, the floating object falling upon hitting by the hinge interlocking of the floating material guide plate 42 is guided into the tube body 41 .

When explaining the operating state of this embodiment by the configuration as described above, first, the pipe body 41 is rotated counterclockwise in the drawing according to the water level, so that the floating object inlet 411 has one end equal to or slightly higher than the water level. make it When the tube body 41 is rotated in this way, as shown in FIG. 7a , the float guide plate 42 forms an inclination gradient from one end of the float inlet hole 411 to the lower portion of the water level.

In this state, according to the flow of the float S1 by the guide plate 33, the float S1 rides the float guide plate 42 and is guided into the pipe body 41. In this process, the float S1 The mixed water passes through the float guide plate 42 to lower the moisture content of the float S1 induced into the tube body 41 .

In this process, when the float (S1) is deposited on the float guide plate (42), the moisture is desorbed due to the squeeze between the floats (S1) due to their own weight, and the desorbed water is transmitted through the float guide plate (42). That is, the floating matter (S1) flocs with a low moisture content are formed.

When the float (S1) floe is sufficiently formed in this way, as shown in FIG. 7b , the float guide plate 42 is hinge-linked to hit the float guide plate 42 on the end of the guide frame 44, so that the float guide plate 42 ) to shake off the floating matter (S1) flocs deposited in the tube body (41) inside. In this process, the induction process into the tube body 41 is made more easily by the induction border 44 .

As seen above, after shaking off the flocs (S1) deposited on the float guide plate 42, the float guide plate 42 is returned to its original position as shown in FIG. 7a and the same process is repeated.

Through repetition of this process, the floating matter S1 introduced into the tube body 41 has a sufficiently low moisture content, so that the load in the post-process can be reduced.

Those skilled in the art from the above description will be able to see that various changes and modifications are possible without departing from the technical spirit of the present invention. Accordingly, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

1: Grinder 2: First wet sorting device
3: 1st cyclone 3: 2nd wet sorting device
5: Second cyclone 6: Chimsa tank
7: coagulation sedimentation tank 7-1: washing water tank
8: thickening tank 9: filter press
20: treatment tank 21: inflow line
22: sediment discharge line 23: treated water discharge line
25: overflow chamber 30: flow part
31: chain 32: sprocket
33: guide plate 40: floating matter collection pipe
41: tube body 42: floating material guide plate
44: Judo border

Claims (8)

a pulverizer for discharging contaminated soil to be purified and to which the contaminated soil is pulverized;
a first wet sorting device for separating and discharging contaminated soil discharged from the pulverizer by separating and discharging soil having a size of less than a first particle diameter from the contaminated soil while washing the supplied contaminated soil with washing water injected;
a first cyclone for separating and discharging fine soil smaller than or equal to a first particle size, which is separated and discharged from the first wet sorting device, and separated and discharged;
a sedimentation tank in which fine soil separated and discharged from the first cyclone is introduced, and the fine soil is gravity sedimented to the bottom and discharges unsettled floating soil;
a coagulation sedimentation tank in which the suspended soil discharged from the sedimentation tank is introduced, and a coagulant is input to cause the sediment to be aggregated from the floating soil and sediment to the bottom;
a thickening tank connected to the discharge ends of the sedimentation tank and the coagulation and settling tank, the sediments treated respectively in the sedimentation tank and the coagulation and settling tank are introduced, and the sediment is stored to generate gravity-separated concentrated sludge and discharge the generated concentrated sludge; and
Concentrated sludge discharged from the thickener is introduced, and the concentrated sludge is subjected to dehydration treatment to produce and discharge a dewatering cake;
The coagulation precipitation tank,
An inlet line through which the suspended soil discharged from the sedimentation tank is introduced is constituted, the treated water including the introduced floating soil is accommodated inside to maintain a certain water level, and a coagulant is input from the outside to collect the sediment coagulated from the suspended soil a treatment tank in which a sediment discharge line to be discharged is formed at one end, and a treated water discharge line communicating with the overflow chamber is formed on the other side;
A pair of chains that move in parallel with each other along the bottom surface of the treatment tank and then move in an ascending manner, a plurality of sprockets for driving the chain, and both ends are fixed to the pair of chains for the treatment A flow part including a plurality of guide plates for allowing the sediment to flow in one direction on the bottom surface of the tank and for allowing the float to flow in one direction in a portion where the water level is formed; and
It is fastened so as to be rotatable inside the treatment tank and has a floating material inlet hole formed at the upper end thereof, and one end communicates with the outside of the treatment tank to discharge the floating material introduced into the inside of the treatment tank to the outside.
The guide plate is
A complex polluted soil purification system comprising: a permeable plate fixed to the chain and forming a hole; and an elastic non-permeable plate fixed to an end of the permeable plate.
The method of claim 1,
The grinder,
A body having an input space formed therein and an opening provided at the lower portion, a rotation shaft installed to pass through the input space of the body in the transverse direction and rotated, a fastening flange coupled at regular intervals along the longitudinal direction of the rotation shaft, and the A plurality of grinding blades coupled radially along the circumference of the fastening flange in a direction orthogonal to the rotation axis, each grinding blade coupled to one fastening flange and each grinding blade coupled to another adjacent fastening flange do not face each other Complex polluted soil purification system, characterized in that it is cross-arranged so as not to.
The method of claim 1,
The second particle size or less is provided at the rear end of the first cyclone and is separated and discharged from the first cyclone, and the fine soil and the smaller size of the second particle size are injected. a second wet sorting device for separating and discharging fine soil smaller than a relatively small third particle size; and
It is provided between the rear end of the second wet sorting device and the front end of the sedimentation tank, and fine soil smaller than or equal to a third particle size that is separated and discharged from the second wet sorting device is introduced, and a fourth particle size that is relatively smaller than the third particle size The complex contaminated soil purification system further comprising a; a second cyclone for separating and discharging the following fine soil and allowing it to flow into the sedimentation tank.
delete The method of claim 1,
Composite polluted soil purification system, characterized in that the treatment tank is configured with a sag preventing part for supporting the chain from the lower part.
delete The method of claim 1,
A complex polluted soil purification system, characterized in that it comprises a bar fixed to the chain between the guide plate and a flock forming sphere protruding from the upper portion of the bar and including a plurality of nuclear protrusions that form a vortex or flocculate suspended matter.
The method of claim 1,
Floating material collection pipe,
A tube body that is rotatably fastened inside the treatment tank, a floating material inlet hole is formed at the upper end, and one end communicates with the outside of the treatment tank to discharge the floating material introduced into the treatment tank to the outside, and one end of the floating material inlet hole is hinged A floating material guide plate that is hinged and formed of a mesh network, and a floating material that protrudes from the other end of the floating material inlet hole to the outside and that falls when struck by the hinge interlocking of the floating material guide plate is guided to the inside of the tube body. Complex contaminated soil purification system comprising a.

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